Theoretical physics is actual philosophy.
理论物理学实际上是哲学。
"Innocence always calls mutely for protection when we would be so much wiser to guard ourselves against it: innocence is like a dumb leper who has lost his bell, wandering the world, meaning no harm."
Teach me to love? Go teach thyself more wit,I chief professor am of it，The god of love, if such a thing there be, may learn to love from me.
笑对人有益，只要不出人命就好。